package com.le.servlet;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class servlet extends HttpServlet {

    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException, ServletException {
    //    this.getInitParameterNames(); 初始化参数
    //    this.getServletConfig(); Servlet配置
    //    this.getServletContext();  Servlet上下文

        ServletContext context=this.getServletContext();
        String userName="lijiale";
        context.setAttribute("username",userName);
      //   context.getRequestDispatcher( "/hello").forward(req,resp); //可以进行转发
        resp.setCharacterEncoding("utf-8");
        resp.getWriter().println(userName);
    }

}
